AuxXxilium/linux_dsm_epyc7002
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80ef517b01
linux_dsm_epyc7002/arch/s390
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Vasily Gorbik 80ef517b01 s390/startup: adjust _sdma and _edma to page boundaries 
Move .dma.text section alignment out of section description, otherwise
zeros used to align the section are included in the section itself (and
section is not really aligned by itself).
$ objdump -h arch/s390/boot/compressed/vmlinux
  5 .dma.text     00001e38  000000000001b1c8  000000000001b1c8  0001c1c8  2**2
                  CONTENTS, ALLOC, LOAD, READONLY, CODE
  6 .dma.ex_table 00000018  000000000001d000  000000000001d000  0001e000  2**2
                  CONTENTS, ALLOC, LOAD, READONLY, DATA
  7 .dma.data     00000240  000000000001d080  000000000001d080  0001e080  2**7
                  CONTENTS, ALLOC, LOAD, DATA
$ cat /sys/kernel/debug/memblock/reserved
   0: 0x0000000000000000..0x0000000000011fff
   1: 0x000000000001b1c8..0x000000000001d2bf
...

Also add alignment before _edma linker symbol definition, so that entire
.dma* region is rounded up to page boundaries.
$ objdump -h arch/s390/boot/compressed/vmlinux
  5 .dma.text     00001000  000000000001c000  000000000001c000  0001d000  2**2
                  CONTENTS, ALLOC, LOAD, READONLY, CODE
  6 .dma.ex_table 00000018  000000000001d000  000000000001d000  0001e000  2**2
                  CONTENTS, ALLOC, LOAD, READONLY, DATA
  7 .dma.data     00000240  000000000001d080  000000000001d080  0001e080  2**7
                  CONTENTS, ALLOC, LOAD, DATA
$ cat /sys/kernel/debug/memblock/reserved
   0: 0x0000000000000000..0x0000000000011fff
   1: 0x000000000001c000..0x000000000001dfff
...
$ cat /sys/kernel/debug/kernel_page_tables
---[ Identity Mapping ]---
0x0000000000000000-0x000000000001c000       112K PTE RW NX
0x000000000001c000-0x000000000001d000         4K PTE RO X
0x000000000001d000-0x0000000000100000       908K PTE RW NX
...

Reviewed-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2019-08-21 12:58:53 +02:00
..
appldata proc/sysctl: add shared variables for range check 2019-07-18 17:08:07 -07:00
boot s390/startup: adjust _sdma and _edma to page boundaries 2019-08-21 12:58:53 +02:00
configs Kbuild updates for v5.3 2019-07-12 16:03:16 -07:00
crypto s390/crypto: sha: Use -ENODEV instead of -EOPNOTSUPP 2019-06-15 12:24:48 +02:00
hypfs s390/hypfs: fix a typo in the name of a function 2019-07-23 10:45:32 +02:00
include s390/kasan: provide uninstrumented __strlen 2019-08-21 12:58:52 +02:00
kernel s390/stacktrace: use common arch_stack_walk infrastructure 2019-08-21 12:58:53 +02:00
kvm KVM: s390: Use kvm_vcpu_wake_up in kvm_s390_vcpu_wakeup 2019-07-20 09:00:45 +02:00
lib s390: clean .bss before running uncompressed kernel 2019-08-21 12:58:52 +02:00
mm s390/mm: use refcount_t for refcount 2019-08-21 12:41:43 +02:00
net s390: bpf: eliminate zero extension code-gen 2019-05-24 18:58:38 -07:00
numa treewide: add checks for the return value of memblock_alloc*() 2019-03-12 10:04:02 -07:00
oprofile s390/unwind: introduce stack unwind API 2019-05-02 13:54:11 +02:00
pci s390/pci: PCI_IOV_RESOURCES loop refactoring in zpci_map_resources 2019-08-21 12:41:43 +02:00
purgatory s390/purgatory: update .gitignore 2019-06-04 15:03:42 +02:00
scripts s390: make chkbss work with clang 2019-04-11 13:36:52 +02:00
tools s390/disassembler: update opcode table 2019-06-04 15:03:58 +02:00
Kbuild s390/kexec_file: Add purgatory 2018-04-16 09:10:22 +02:00
Kconfig s390/stacktrace: use common arch_stack_walk infrastructure 2019-08-21 12:58:53 +02:00
Kconfig.debug Kconfig: consolidate the "Kernel hacking" menu 2018-08-02 08:06:48 +09:00
Makefile Kconfig updates for v5.3 2019-07-12 16:06:27 -07:00